The deep, well-defended valley in the northern [[White Mountains]] that held [[Helm's Deep]] and the castle of the [[Hornburg]]. The site of an important battle, the [[Battle of the Hornburg]], during the [[War of the Ring]].

The deep, well-defended valley in the northern [[White Mountains]] that held [[Helm's Deep]] and the castle of the [[Hornburg]]. The site of an important battle, the [[Battle of the Hornburg]], during the [[War of the Ring]].